<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>

            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
            :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        return {
            menuList: [],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse: false,
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    async getMenuList(){
     const {data:res} = await this.$http.get('menus')
     if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
     this.menuList =res.data
    },
    toggleCollapse() {
        this.isCollapse=!this.isCollapse
    },
    saveNavState(activePath) {
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath =activePath
    }
  },
};
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0px;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
    border-right:none;
  }
  
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
    margin-right:10px;
}
.toggle-button{
    background-color:#4a5064;
    font-size:10px;
    line-height:24px;
    color:#fff;
    text-align:center;
    letter-spacing:0.2em;
    cursor:pointer;
}
</style>
